CH155673A - Process for the preparation of an azo dye. - Google Patents

Process for the preparation of an azo dye.

Info

Publication number
CH155673A
CH155673A CH155673DA CH155673A CH 155673 A CH155673 A CH 155673A CH 155673D A CH155673D A CH 155673DA CH 155673 A CH155673 A CH 155673A
Authority
CH
Switzerland
Prior art keywords
preparation
azo dye
dye
red
millfastness
Prior art date
Application number
Other languages
German (de)
Inventor
Aktiengesellsc Farbenindustrie
Original Assignee
Ig Farbenindustrie Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ig Farbenindustrie Ag filed Critical Ig Farbenindustrie Ag
Publication of CH155673A publication Critical patent/CH155673A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
    • C09B29/00—Monoazo dyes prepared by diazotising and coupling
    • C09B29/24—Monoazo dyes prepared by diazotising and coupling from coupling components containing both hydroxyl and amino directing groups
    • C09B29/28—Amino naphthols
    • C09B29/30—Amino naphtholsulfonic acid

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Coloring (AREA)

Description

  

  Zusatzpatent zum Hauptpatent     Nr.    149704.         Verfaln-en        zur        *Darstellung    eines     Azofarbstoffes.       Es wurde gefunden,     dass    man einen wert  vollen sauren     Wollfarbstoff    erhält, wenn man       diazotiertes    Anilin mit     omega-Ohloracetyl-2-          amido-5-iiaphthol-7-stiliosäure    kuppelt.  



  <I>Beispiel:</I>  Zu einer     sodaalkalischen    Lösung von<B>32</B>  Gewichtsteilen     oinega-Ohlot-acetyl-2-aiiiido-5-          naphthot-7-sulfosäure    gibt man eine     Diazo-          lösung    aus<B>9,3</B> Gewichtsteilen Anilin. Der  isolierte Farbstoff stellt ein gelbrotes Pulver  dar, das Wolle aus saurem Bade in orange  roten Tönen von guter     Walkechtheit    färbt.



  Additional patent to the main patent No. 149704. Procedure for the * representation of an azo dye. It has been found that a valuable acidic wool dye is obtained if diazotized aniline is coupled with omega-chloroacetyl-2-amido-5-iiaphthol-7-stilioic acid.



  <I> Example: </I> A diazo solution is added to an alkaline soda solution of <B> 32 </B> parts by weight of oinega-Ohlot-acetyl-2-aiiiido-5-naphthot-7-sulfonic acid 9.3 parts by weight aniline. The isolated dye is a yellow-red powder that dyes wool from an acid bath in orange-red shades of good millfastness.

Claims (1)

PATENTANSPRUCH: Verfahren zur Darstellung eines Azofarb- stoffes, dadurch gekennzeichnet, dass man diazotiertes Anilin mit ouaega-Ohloracetyl-2- amido-5-naphthol-7-sulfosäure kuppelt. Der Farbstoff stellt ein gelbrotes Pulver dar, das Wolle aus saurem Bade in orange roten Tönen von guter Walkechtheit färbt. PATENT CLAIM: Process for the preparation of an azo dye, characterized in that diazotized aniline is coupled with ouaega-chloroacetyl-2-amido-5-naphthol-7-sulfonic acid. The dye is a yellow-red powder that dyes wool from an acid bath in orange-red shades of good millfastness.
CH155673D 1931-09-08 1931-09-08 Process for the preparation of an azo dye. CH155673A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH149704T 1931-09-08
CH155673T 1931-09-08

Publications (1)

Publication Number Publication Date
CH155673A true CH155673A (en) 1932-06-30

Family

ID=25715476

Family Applications (1)

Application Number Title Priority Date Filing Date
CH155673D CH155673A (en) 1931-09-08 1931-09-08 Process for the preparation of an azo dye.

Country Status (1)

Country Link
CH (1) CH155673A (en)

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